Tin-sheet-paraffining machine.



J. M. DE VOE. TIN SHEET PARAFFINING MACHINE.

'APPUCATION FILED JAN. 24.1913- Patented Feb. 29,1916.

5 SHEETS-SHEET I.

J. M. DE VOE.

TIN SHEET PARAFFINING MACHINE.

APPLICATION FILED man. 1913.

mmmlmr Patented Feb. 29, 1916.

5 SHEETSSHEET 2.

1. M. DE VOE.

. T IN SHEET PARAFFlNING- MACHINE.

'APPLICATION FILED JAN. 24 1913- w 1,173,1 1, Patented Heb. 29,1916.

5 SHEETS-SHEET S.

J. M. DE VOE.

Patented Feb. 29, 1916.

5 SHEETSSHEET 4.

flZ/GWZZUW/ W E ew HH 7 C1 .V A. v 4 2 M N e. h D F m AI F MN 0 I M C IH M J. M. DE VOE.

TIN SHEET PARAFFINING MACHINE.

APPLICATION FILED JAN. 24. 1913.

Patented Feb. 29,1916.

5 SHEETS-SHEET 5- rnrrn sra rns rarnn rmcn.

JOHN M. DE VOE, OF CHICAGO, ILLINOIS, ASSIGNOR TO WEYMAN-BRUTON COMPANY,OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

TIN-SHEET-PABAFFINING MACHINE.

Specification of Letters Eatent.

Patented Feb. 29, 1916.

To all whom it may concern:

Be it known that 1, JOHN M. DE Von, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented new and useful Improvements in Tin-Sheet-Paraflining Machines,of which the following is a specification.

This invention relates to improvements in machines especially adaptedfor use in paraflining the surface or surfaces of tin in sheet form,preparatory to its being stamped or otherwise worked into shape. It willbe understood, however, that other material,

either in sheet or web .form, such as strawboard and the like, may beequally well coated, by the use of the machine forming thesubject-matter of this invention.

1 am aware that difierent devices have been employed for the purpose ofapplying paraflin in a liquid state, t0,the surface of manufactured.articles. Such mechanisms have been objectionable, in that they havebeen complicated in construction, wasteful in use, unsuccessful inrespect to applying a complete and uniform, coating, and limited incapacity of out-put.

I-have found that by using the paraffin from the cake, or in a congealedstate, that it can be worked more economically and to better advantage,and the object of my invention is to overcome the objections aboveenumerated and to provide a simple, durable and efficient machine forthe purpose.

Briefly and generally stated the invention comprises a coating machineof the character stated, embodying means for feeding and supporting asheet or web of the material to have a coating applied thereto,adjustable means for supporting a cake of the coating substance ormaterial and rotary means movable in surface contact with the said cakeof coating material and with the surface of the 'sheet or web forapplying said material to the sheet or web.

The invention resides further in the provision of means forautomatically and for manually adjusting the position of the cakesupporting means relative to the rotary applying means, whereby thequantity of coating material applied to the sheet or web may bevaried atwill to suit the conditions required, the said adjusting means beingindependently operable The invention resides further in improved meansfor supporting the web or sheet as it passes through the machine, and

in improved means for maintaining the sheet in contact with the rotaryapplying and brushing or finishing devices.

The invention resides further in the features of construction and in thecombinations and arrangement of parts hereinafter described in detailand then more definitely pointed out in the claims.

Referring to the drawings: Figure 1 is a broken side elevation of myimproved machine; Fig. 2 is a plan view of the same with a portionthereof broken away; Fig. 3, is a plan sectional view taken at the line3, Fig. -1, and showing, more especially, the mechanism employed forfeeding the cake of parafiin; Fig. 4 is an end or rear elevation, asviewed from the right hand of Fig. 1; Fig. 5 is a broken transversesectional elevation, taken at the line 5, Fig. 1; Fig. 6 is anenlargeddetail section, taken at the line 6, Fig. 5; Fig. 7 is also anenlarged broken sectional elevation taken at the line 7, Fig. 2; Fig. 8is a broken sectional elevation of a portion of the frame, and taken atthe line 8, Fig. 9; and Fig. 9 is a broken sectional elevation taken atthe line 9, Figs. 7 and 8.

Two similar side-frames 10 are provided and between them are securedcross-members 11 and 12, to extend flush with the upper surface thereof,(Figs. 2 and 7-). The member 11 is equipped with a series of pins 13,uniformly spaced apart, while the member 12, which is preferably ofchannel-shape in cross-section, has fastened to it between its flanges,a wooden block 14: carrying a series of screw-pins 15 like the tuningpegs of a piano. I provide guiding means for guiding the sheet past thebrush that applies the coating, and give this means a form which in noway interferes with the operation of the brush. This guiding means ispreferably of filamentary or wire form. These wires being of small gage,do not cover the face of the sheet in such a way as to interfere withthe uniform application of the coating though they are on the side ofthe sheet toward the brush and brushed by the bristles of the brush.

The pins 13 and 15 are in longitudinal alinement and a series of wires16 are looped about the former, at one of their ,equipped, respectively,with brushes 21 and 22 intermediate the frame 10, and each carries apulley 23 at one of it ends, the pulleys being belted together as shqwnin Fig. 1, and as represented by dotted lines in Fig. 2. The shaft 17carries at its opp site end pulleys 24 and 25, and a belt 26, l .adingfrom any suitable source of power, passes about the pulley 24 to revolvethe brushes at a comparatively high velocity beneath the wires 16 andpreferably in the direction of the arrows ig. 7.

Bars or angle-irons 28 and 29 are adjust ably secured to the frames 10,as at 27, and are arranged to extend transversely across the machine,the vertex of the angle of each bar being directly above a brush and incontact therewith. The bar 29 is equipped with two rearwardly-extendingspring-arms 30,

' so curved as to normally rest (near their free ends), tangentially tothe horizontal plane of the wires 16. The bar 29 also carries aforwardly extending spring-arm 31 which rests at its free end upon thecross member 11 of the frame. Each of the arms 30 and 31 is positionedupon the bar between on the frame, and are provided, respectively,

with feeding-rolls 38 and 39. The lowermost a pair of the wires 16.

A shaft 32 is journaled in bearings 33 in the frame, keyed thereto is apulley 34 which answers the purpose of a fly-wheel, and a belt 35 passesabout the pulleys 25 and 34 to impart rotation to, the shaft. Two pairsof feed-shafts 36 and 37 are suitably journaled shaft of each pair isprovided at one of its ends with a sprocket-wheel 40, and about both thelatter passes a sprocket-chain 41, as represented by dotted lines inFigs. 1 and 2. The lowermost shaft 36 also carries (at its oppositeend), a pulley 42 which is shown to be belted to the hub or sleeveextension 43 of the pulley 34.

From the foregoing description it will be seen that both the brushes,and the two pairs of feeding-rolls are driven by the belt 26, but thatwhile the former are driven at a high velocity the latter are caused torevolve comparatively slow.

Directly beneath the brush 21 is a cake of paraffin 43, which is carriedby a vertically movable support 44. The support is provided with twodownwardly a extending position by a cross-piece 48 (Fig. 5),. which inturn is' adjustably fastened at its ends to short angle-bars 49 (Figs. 3and 5), projecting inwardly from the side-frames.

For feeding the wax or paraffin cake 43, to the brushes, the followingdescribed mechanism is employed: At the rear of the machine is a shaft50 journaled in bearings 51 which rise from a cross-piece 52 secured tothe frames 10. A hand-wheel 53 is mounted upon one end of the shaft, inconvenient reach of the operator, and a worm 54 pinned to the shaft,meshes with a worm-wheel 55 (Figs. 3 and 4), on a shaft 56 disposed atright-angles to the shaft 50. The shaft 56 likewise carries a worm-57 inmesh with a worm wheel 58 on a shaft 59 mounted in bearings 60 risingfrom a cross-piece 61, similar to the cross-piece 52. Arms 62 are pinnedto the ends of the shaft 59 and extend forward to bear against andembrace the bars 46, and at their free ends beneath the support 44. Arod 63 is bolted between the arms to afford rigidity thereto.

It will be apparent from the above description, that rotation of theshaft 50 through the medium of the hand-wheel 53 it becomes advantageousto use an automatic feed, the following described parts may be coupledup by throwing a pawl into engage.

ment with a ratchet-wheel.

, Adjacent to the pulley'42, the shaft 36' is equipped with an eccentric64 adapted to revolve within an eccentric-strap 65 on one end of aconnecting-rod 66, which may be adjustably connected at its opposite endwith a rock-arm 6 7 loosely mounted upon the shaft 50. A pawl 68 ispivoted to the free end of the rock-arm .and is adapted to be throwninto or out of working engagement with the teeth of a ratchet-wheel 69,keyed to the shaft 50. Thus the revolution of the shaft 36 will impart arocking movement to the arm to turn the shaft a fraction of a revolutionupon each rotation of the shaft 36. A feeding-table 70 is suitablysupported at the rear of the machine,'and is provided with guides 71,and a stack of tin or other material to be coated is positioned thereonas indicated at 72.

The operation is as follows: A sheet of the material to be coated istaken from the stack bv the operator and passed along the table 70, withits edge resting against the- 60 i sides of the bars act as-guides toassist in 1 fiai'igenide 71, until it is gripped by the with the brushes21 and 22.

course through the machine.

feeding-rolls 38. These rolls thereafter iminsure its entrance betweenthe feed-rolls 39 which act upon it after it has passed from the rolls38. A pair of curved fingers 73 project from the member 11 into the pathof movement of the sheet, so that if by any chance the corners of asheet should be curled downward they will be guided by these fingersover the member 11. The brush 21 as it revolves in contact with theparaffin transfers the same to the sheet in the form of a. coating whichis thereafter smoothed and polished by the brush 22.

In the operation of the machine it is understood that the bars 28 and 29afford means for backing up the sheets rigidly in a narrow zoneextending longitudinally of the brushes, that is parallel with the axisof iotation of each brush. This zone is substantially the line oftangency of a tangent plane touching the bristles of the brush.

' For the reason that the guide wires employed respect to the bars isnicely adjusted so that the tips of the bristles carrying the coatingfrom the cake of coating material, wipe themselves on the sheet in thenarrow zone. In other words the brushes are constantly wiping thecoating onto a narrow line which passes relatively along the sheet asthe sheet is fed through the machine. The operation of the brush 18 issimilar to that of the .brush 17, but has the effect of rubbing thecoating in and removing the surplus substance. Ihe bars 28 and 29 arepreferably in the form of angular bars as shown, that is each barpresents a dihedral angle on the line of tangency of the brush. In thisway the zone of application of the coating comes at the vertex of theangle, and the forward guiding the sheet.

As these brushes are both revolved at high velocity particles of theparaffin in the form of dust will be thrown therefrom by the centrifugalaction and in order to gather and confine these, shields 74 and 75 aresupported adjacent to the brushes (see Fig. 7). Obviously as theparaffin is worn away by the action of the brush 21, the cake must beraised, and this may be accomplished intermittently by the operator orcontinuously by coupling up the automatic feed, as before explained.

Successive sheets of tin or other material may be ,fed as described, andin much the same manner as in a printing press, but it is possible topass material in web form through the machine, by initially entering theend of the web between the rollers 38.

In this event the web is preferably supported in a roll, not shown, uponthe frame or otherwise disposed. Although the sheets are fed along abovethe wires 16, the latter do not prevent the free and uniformdistribution of the paraffin over the entire surface thereof, as thebrushes are so adjusted relative to the sheet as to insure the spreadingof a uniform coating over the entire surface.

What I claim is 1. In a coating machine, in combination, a rotary brush,means for advancing a sheet past said. brush in a tangential direction,backing means'presenting a line of support for backing up said sheet onthe side thereof opposite said brush extending along the line oftangency with said brush, and means for feeding the coating material tothe brush.

2. In a coating machine in combination, a rotary brush, means foradvancing a sheet past said brush in a tangential direction, backingmeans presenting an edge toward the sheet for backing up said sheet onthe side thereof opposite to said brush extending along the line oftangency, and means for yieldingly backing up the sheet imme diatelyadjacent to said backing means and the brush.

3. In a coating machine in combination, a rotary brush, means foradvancing a sheet past said brush in a tangential direction,

backing means presenting an edge toward the sheet for backingup saidsheet on the side thereof opposite to said brush in a narrow zoneextending along the line of tangency, and means for yieldingly backingup the sheet on each side of the brush.

4. In a coating machine in combination, a rotary brush, means forfeeding a coating material thereto, means for advancing a sheet pastsaid brush in a tangential direction, a bar substantially parallel withthe axis of said brush and having a dihedral angle presented toward thebrush for back ing up said sheet on the side thereof opposite to saidbrush in a. narrow zone extending along the line of tangency.

5. In a coating machine in combination, a rotary brush having bristles,means for advancing a sheet past said brush in a tan- 'ing meansextending past the brush in the direction of advance of the sheet.

6. In a coating machine in combination, a rotary brush having bristles,means for advancing a sheet past said brush in a tangential direction,backing means having an edge for backing up said sheets on the sidethereofv opposite said brush in a narrow zone extending along the lineof tangency withsaid brush, means for feeding the coating material tothe brush, and filamentary guiding means extending past the brush in thedirection of advance of the sheet for supporting and guiding the sheeton the face thereof which is disposed toward vthe brush. I

7. In a coating machine in combination, a rotary brush, means forfeeding a coating material thereto, means for advancing a sheet pastsaid brush in a tangential direction, a bar substantially parallel withthe axis of saidbrush havingan edge to en- I a pair of substantiallyparallel rotary brushes, a plurality of taut guide Wires extending in aplane substantially tangential to said brushes, means for feeding thesheet of material along said wires on the side thereof opposite saidbrushes, a bar disposed over each brush having an edge engaging thesheet and disposed transversely to and adjacent said wires, and forminga backing for holding the passing sheet in contact with the brushes, andmeans for feeding a cake of thecoating substance to one of said brushes.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

JOHN M. DE VOE. Witnesses ELwoon M. SKINNER, FRANCIS G. JAMIsoN.

